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Updated: Jun 7, 2026

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
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单价离子选择性结合于由瓜诺辛5'-单酸盐形成的堆叠G-四结构:一个固态NMR研究

Alan Wong1, Gang Wu

  • 1Department of Chemistry, Queen's University, Kingston, Ontario, Canada K7L 3N6.

Journal of the American Chemical Society
|November 6, 2003
PubMed
概括

在不同的表面和通道位点,单价酸盐与瓜诺辛5'-单酸盐 (5'-GMP) 结构结合. 对通道位点的离子亲和力,而不是表面,决定了G-四重复结构的稳定性.

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相关概念视频

¹H NMR: Complex Splitting01:13

¹H NMR: Complex Splitting

A proton M that is coupled to a proton X results in doublet signals for M. However, NMR-active nuclei can be simultaneously coupled to more than one nonequivalent nucleus. When M is coupled to a second proton A, such as in styrene oxide, each peak in the doublet is split into another doublet.
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied first.
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Nucleic Acid Structure

The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms  a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA has a double-helix structure. The...